Electron-discharge device



Nov. 1 1925. I 1,562,396 I F. E. WARD ELECTRON. DISCHARGE DEVICE Filed June 4. 1925 Patented Nov. 17, 1925.

UNITED STATES PATENT OFFICE.

FRANK E. WARD, OF CORONA, NEW YORK, ASSIGNOR TO WESTERN ELECTRIC COM- PANY, INCORPORATED, OIELNEW YORK, N. Y., A CORPORATION OF NEW YORK.

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Application filed June 4, 1923. Serial No. 643,234.

To all whom it may boncern:

Be it known that I, FRANK lVAun, a citizen of the United States, residing at Corona, in the county of Queens, State of New York, have invented certain new and useful Improvements in Electron-Dischargc Devices, of which the following is a full, clear, concise, and exact description.

This invention relates to electron discharge devices ,and pertains especially to vacuum tubes capable of handling large amounts of power. j

The object of this invention is to simplify the supporting structure for the electrodes of devices of this character.

In devices of this type, metallic rods are positioned in perforated tabs of a collar and serve as sup orts for the electrode assembly. This inventlon contemplates a supporting structure in which the metallic rods are attached to the tabs by expansions formed on the rods. This arrangement provides an easily assembled and rigid structure for the support of the electrodes.

Referring to the drawings, Fig. 1 is an elevation, partially broken away, of an electron discharge device embodying this invention; Fig. 2 is an enlarged detail of the supporting assembly; Figs. 3 and 4 are enlarged details of the metallic rod.

The enclosing vessel 'of an electron discharge device comprises a cup-shaped metallic anode 10, a glass portion 11, and. a reentrant stem 12. Surrounding the 'stem 12 is a metallic collar 13, which is supported on the stem 12'wholly by a friction. Projecting from the"upper and lower ends of the collar 13 are tabs 14. These tabs are ar ranged at right angles to the collar 13 and are perforated, the perforation of. the upper tab being in alignment with the perforation in the lower tab. Metallic rods 15, extend through the perforations in the tabs 14, the free ends of the metallic rods being attached to the insulating member 18, which serves as a support for the grid and cathode. Arranged on the metallic rods 15 are metal washers 16, disposed on opposite sides of the perforated tabs 14. Ears 1 7 are expanded from the metallic rods 15, adjacent the outer ends of spacing washers 16, alternate pairs of expanded portions or cars being in staggered relation to each other. The expanded portions of the metallicrod provide a wedging action against the sleeve members 16,:

thereby clamping the metallic rods 15 to the collar 13.

By the use of this invention, a highly efiicient'and inexpensive supportin structure is provided, which eliminates vibration and loose connections. Although the invention is illustrated as attaching the metallic rods to the collar,'it may, with equal eilect,,be

employed to attach the rods to other means of support without departing from the scope of the invention as represented by the appended claims.

What is claimed is:

1. In an electron discharge device, a supporting means, metallic member carried by said supporting means, and washers on said member positioned'on opposite sides of said supporting means, said member having integral ears formed thereon in contact with said washers. I

2. In an electron discharge device a support for, electrodes, comprising a collar, supporting means on said collar, a metallic rod inser ed in said supporting means, and washers on'sa-id metallic rod, portions of said rod being enlarged in width and co operating with said washers to prevent movement of said metallic rod in said supporting means.

3. In an electron discharge device, aicollar, projections on-said collar, a metallic member extending through a plurality of said projections, spacing means on said metallic member on opposite sides of'said projections, and integral wedge-shaped per,- tions on said metallic member, said wedgeshaped portions serving to clamp the spacing means on opposite sides of said projections to attach said metallic member to said collar.

4. In an electron discharge device, an: evacuated vessel, a stem, a collar encircling said stem, a plurality of perforated projections on said collar, a metallic rod in-;

serted in said perforated projections, and washers on said metallic rodposltloned on opposite sides of said perforated pro ectlons,

said metallic rod having integral ex anded portions contiguous with said was ers to support said metallic rod from said collar.

' 5. In an electron discharge device, an evacuated vessel, a stem, a collar encircling said stem, a plurality of perforated. pro ections on said collar, a metallic rod inserted in said perforatedprojections, and washers omsaid' metallicrod positioned on opposite sides of said perforated, projections, said metallic rod having inte ral ears contiguous with said washers, ad

ingan evacuated vessel, a stem, a collarencircling said stein, a plurality of perforated projectionson said collar, a metallic mem- 30 her extending through said'projections', and

jacent ears being 5 inv staggered relation to each other. I

6. An electron discharge device, comprisspacing means on said metallic member arranged on opposlte sldes of said pro ections,

said metallic member being expanded ad jacent the outer ends of said spacing means FRANK E. 

